Muscles Flashcards
(119 cards)
1
Q
ILIACUS origin
A
anterior/inferior surface of iliac crest
2
Q
ILIACUS insertion
A
lesser trochanter of femur
3
Q
ILIACUS action/innervation
A
Flexes hip
L2, L3
Femoral N.
4
Q
PSOAS MAJOR origin
A
anterolateral surface of T12 to L5 vertebra
5
Q
PSOAS MAJOR insertion
A
lesser trochanter of femur
6
Q
PSOAS MAJOR action/innervation
A
Flexes hip
L2, L3
Femoral N.
7
Q
iliopsoas muscle
A
iliacus and psoas major
*Different origins, same insertions/action/innervation
8
Q
ADDUCTOR MAGNUS magnus origin
A
ischium and pubis
9
Q
ADDUCTOR MAGNUS insertion
A
Linea aspera and adductor tubercle
10
Q
ADDUCTOR MAGNUS action/innervation
A
adducts hip
Obturator N.
Sciatic N.
11
Q
GRACILIS origin
A
pubis
12
Q
GRACILIS insertion
A
pes anserine (anteromedial proximal tibia)
13
Q
GRACILIS action/innervation
A
adducts hip
flexes knee
Obturator N.
14
Q
RECTUS FEMORIS origin
A
anterior inferior iliac spine
15
Q
RECTUS FEMORIS insertion
A
tibial tuberosity
16
Q
RECTUS FEMORIS action/innervation
A
flexes hip
extends knee
Femoral N.
17
Q
VASTUS LATERALIS origin
A
lateral anterior surface of femur
18
Q
VASTUS LATERALIS insertion
A
tibial tuberosity
19
Q
VASTUS LATERALIS action/innervation
A
extends knee
Femoral N.
20
Q
VASTUS INTERMEDIUS origin
A
middle anterior surface of femur
21
Q
VASTUS INTERMEDIUS insertion
A
tibial tuberosity
22
Q
VASTUS INTERMEDIUS action/innervation
A
extends knee
Femoral N.
23
Q
BICEPS FEMORIS origin
A
Long head - ischial tuberosity
Short head - linea aspera of femur
24
Q
BICEPS FEMORIS insertion
A
fibular head
25
BICEPS FEMORIS action/innervation
Long head - extends hip and flexes knee
Short head - flexes knee ONLY
Long head - Sciatic N.
Short head - Common Peroneal N.
26
GLUTEUS MAXIMUS origin
posterior sacrum and ilium
27
GLUTEUS MAXIMUS insertion
greater trochanter of femur and iliotibial band
28
GLUTEUS MAXIMUS action/innervation
extends and externally rotates hip
Inferior Gluteal N.
29
SOLEUS origin
posterior tibia and fibula
30
SOLEUS insertion
calcaneus via the Achilles' tendon
31
SOLEUS action/innervation
plantar flexes ankle
Tibial N.
32
GASTROCNEMIUS origin
posterior medial and lateral condyles of femur
33
GASTROCNEMIUS insertion
calcaneus via Achilles' tendon
34
GASTROCNEMIUS action/innervation
plantar flexes ankle
flexes knee
Tibial N.
35
PERONEUS LONGUS origin
lateral superior fibula
36
PERONEUS LONGUS insertion
plantar surface of cuneiforms and first metatarsal (MT)
37
PERONEUS LONGUS action/innervation
everts foot
plantar flexes ankle (assists)
Superficial Peroneal N.
38
INTERNAL OBLIQUE origin
inguinal ligament
39
INTERNAL OBLIQUE insertion
10 to 12 ribs
40
INTERNAL OBLIQUE action/innervation
Bilateral: flexes trunk
Unilateral: side bends trunk, rotates trunk ipsilateral
8th to 12th Intercostal N.'s
Iliohypogastric N.
Ilioinguinal N.
41
EXTERNAL OBLIQUE origin
5 to 12 ribs laterally
42
EXTERNAL OBLIQUE insertion
iliac crest
| linea alba
43
EXTERNAL OBLIQUE action/innervation
Bilateral: flexes trunk
Unilateral: side bends trunk, rotates trunk contralateral
8th to 12th Intercostal N.'s
Iliohypogastric N.
IIioinguinal N.
44
Erector Spinae muscles
*multiple smaller muscles along length of spine
Spinalis
Longissimus
Iliocostalis
45
ERECTOR SPINAE origins
spinous and transverse processes and posterior ribs from the occiput to the sacrum and ilium
46
ERECTOR SPINAE insertions
spinous and transverse processes and posterior rubs from the occiput to the sacrum and ilium
47
ERECTOR SPINAE action/innervation
Bilateral: extend neck and trunk
Unilateral: longissimus and iliocostalis side bend trunk, rotates head and trunk ipsilateral
Spinal N.'s from occiput to sacrum
48
SUPINATOR origin
posterolateral ulna and lateral epicondyle of humerus
49
SUPINATOR insertion
anterior proximal radius
50
SUPINATOR action/innervation
supinates forearm
Radial N.
51
TERES MINOR origin
axillary border of scapula
52
TERES MINOR insertion
greater tubercle of humerus
53
TERES MINOR action/innervation
external rotation of shoulder
depresses humeral head
Axillary N.
54
TRICEPS BRACHII origin
medial head: posterior distal humerus
lateral head: lateral humerus
long head: infraglenoid tubercle of scapula
55
TRICEPS BRACHII insertion
olecreanon process of the ulna
56
TRICEPS BRACHII action/innervation
extend elbow
long head - extends shoulder (assists)
Radial N.
57
DELTOID origin
anterior: clavicle
middle: acromion process of scapula
posterior: spine of scapula
58
DELTOID insertion
deltoid tuberosity of humerus
59
DELTOID action/innervation
ALL: abduct shoulder (primary)
anterior: internal rotation and horizontally adducts shoulder, flexes shoulder (primary)
posterior: external rotation and horizontally abducts, extends shoulder (primary)
Axillary N.
60
LATISSIMUS DORSI origin
inferior angle of scapula; spinous processes T7 to T12; lumbodorsal fascia; sacrum; iliac crest, inferior angle
61
LATISSIMUS DORSI insertion
base (floor) of the bicipital (intertuburcular groove) of the humerus
62
LATISSIMUS DORSI action/innervation
extends and internally rotates the shoulder
Thoracodorsal N.
63
LEVATOR SCAPULA origin
transverse processes of C1 to C4
64
LEVATOR SCAPULA insertion
superior angle of the scapula
65
LEVATOR SCAPULA action/innervation
elevates and downward rotates scapula
C3, C4 nerve roots
Dorsal Scapular N.
66
TRAPEZIUS origin
superior nuchal line of occipital bone; ligamentum nuchae; spinous processes and supraspinous ligament of C1 to T12
67
TRAPEZIUS insertion
upper: lateral clavicle, acromion process
middle: spine of scapula
lower: spine of scapula
68
TRAPEZIUS action/innervation
upper: elevates and upward rotates scapula
middle: retracts scapula
lower: depresses and upward rotates scapula
C3, C4 spinal nerve roots
Spinal Accessory N. (CN XI)
69
PRONATOR TERES origin
medial epicondyle of humerus
70
PRONATOR TERES insertion
midshaft of radius
71
PRONATOR TERES action/innervation
```
pronates forearm
flexes elbow (assists)
```
Median N.
72
BRACHIALIS origin
anterior lower half of humerus
73
BRACHIALIS insertion
coronoid process of ulna
74
BRACHIALIS action/innervation
flexes elbow (primary when forearm pronated)
Musculocutaneous N.
75
SUBSCAPULARIS origin
subscapular fossa
76
SUBSCAPULARIS insertion
lesser tubercle of the humerus
77
SUBSCAPULARIS action/innervation
internal rotation of shoulder
depresses humeral head
Upper and Lower Subscapular N.'s
78
BICEPS BRACHII origin
short head: coracoid process of scapula
| long head: supraglenoid tubercle of scapula
79
BICEPS BRACHII insertion
radial tuberosity
80
BICEPS BRACHII action/innervation
```
flexes elbow (primary when forearm supinated)
supinates forearm
long head: flexes shoulder (assists)
```
Musculocutaneous N.
81
SUPRASPINATUS origin
supraspinous fossa of scapula
82
SUPRASPINATUS insertion
greater tubercle of humerus
83
SUPRASPUNATUS action/innervation
abducts shoulder
elevates humeral head
Suprascapular N.
84
INFRASPINATUS origin
infraspinatus fossa of scapula
85
INFRASPINATUS insertion
greater tubercle of humerus
86
INFRASPINATUS action/innervation
external rotation of shoulder
depresses humeral head
Suprascapular N.
87
PERONEUS BREVIS origin
lateral middle fibula
88
PERONEUS BREVIS insertion
base of 5th metatarsal
89
PERONEUS BREVIS action/innervation
everts foot
plantar flexes ankle (assists)
Superficial Peroneal N.
90
TIBIALIS ANTERIOR origin
lateral tibia and interosseous membrane
91
TIBIALIS ANTERIOR insertion
1st cuneiform and 1st metatarsal
92
TIBIALIS ANTERIOR action/innervation
dorsiflexes ankle
inverts foot
Deep Peroneal N.
93
TIBIALIS POSTERIOR origin
posterior fibula and tibia
| interosseous membrane
94
TIBIALIS POSTERIOR insertion
plantar surface of navicular, tarsals, and metatarsals
95
TIBIALIS POSTERIOR action/innervation
plantar flexes ankle
inverts foot
Tibial N.
96
RECTUS ABDOMINIS origin
pubis
97
RECTUS ABDOMINIS insertion
ribs 5 to 7
98
RECTUS ABDOMINIS action/innervation
flexes trunk
7th to 12th Intercostal N.'s
99
STERNOCLEIDOMASTOID origin
sternum and clavicle
100
STERNOCLEIDOMASTOID insertion
mastoid process of temporal bone
101
STERNOCLEIDOMASTOID action/innervation
bilateral: extends head, flexes neck
unilateral: side bends neck
rotates head contralateral
C2, C3 spinal nerves
Spinal Accessory N.
102
VASTUS MEDIALIS origin
medial anterior surface of femur
103
VASTUS MEDIALIS insertion
tibial tuberosity
104
VASTUS MEDIALIS action/innervation
extends knee
Femoral N.
105
SARTORIUS origin
anterior superior iliac spine
106
SARTORIS insertion
pes anserine (anteromedial proximal tibia)
107
SARTORIS action/innervation
flexes, abducts, and externally rotates hip
flexes knee
Femoral N.
108
TENSOR FASCIA LATAE origin
anterolateral iliac crest
109
TENSOR FASCIA LATAE insertion
iliotibial band to the lateral condyle of tibia
110
TENSOR FASCIA LATAE action/innervation
flexes, abducts, and internally rotates hip
extends knee
Superior Gluteal N.
111
GLUTEUS MEDIUS origin
lateral/outer surface of ilium
112
GLUTEUS MEDIUS insertion
greater trochanter of the femur
113
GLUTEUS MEDIUS action/innervation
abducts hip
anterior fibers internally rotate hip
posterior fibers externally rotate hip
Superior Gluteal N.
114
SEMITENDINOSUS origin
ischial tuberosity
115
SEMITENDINOSUS insertion
pes anserine (anteromedial proximal tibia)
116
SEMITENDINOSUS action/innervation
extends hip
flexes knee
Sciatic N.
117
SEMIMEMBRANOSUS origin
ischial tuberosity
118
SEMIMEMBRANOSUS insertion
posteromedial condyle of tibia
119
SEMIMEMBRANOSUS action/innervation
extends hip
flexes knee
Sciatic N.
